CN113362743B - Display device - Google Patents
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- CN113362743B CN113362743B CN202010140861.5A CN202010140861A CN113362743B CN 113362743 B CN113362743 B CN 113362743B CN 202010140861 A CN202010140861 A CN 202010140861A CN 113362743 B CN113362743 B CN 113362743B
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/023—Display panel composed of stacked panels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0435—Change or adaptation of the frame rate of the video stream
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Instrument Panels (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
本揭露提供一种显示装置。所述显示装置包含显示单元、透明度控制单元以及驱动电路。所述驱动电路耦接所述显示单元以及所述透明度控制单元，其中所述驱动电路以不同模式驱动所述显示单元以及所述透明度控制单元。因此，本揭露的显示装置可提供透明显示功能。
The present disclosure provides a display device. The display device includes a display unit, a transparency control unit, and a driving circuit. The driving circuit is coupled to the display unit and the transparency control unit, wherein the driving circuit drives the display unit and the transparency control unit in different modes. Therefore, the display device of the present disclosure can provide a transparent display function.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a transparent display device.
Background
The transparent display may also allow ambient light of the background to penetrate while displaying the image, so that the image to be displayed and the image of the background are viewed by the user at the same time.
In the actual display of the image content, if the background image brightness is too high, the contrast of the image body may be reduced, or the characteristic edges of the image body may be easily blurred. Therefore, the transparent areas corresponding to the image bodies and the image bodies need to be properly controlled so as to improve the display quality of the image.
Disclosure of Invention
The present disclosure provides a transparent display device having different driving modes.
According to an embodiment of the disclosure, a display device includes a display unit, a transparency control unit, and a driving circuit. The driving circuit is coupled to the display unit and the transparency control unit, wherein the driving circuit drives the display unit and the transparency control unit in different modes.
Based on the above, the display device of the present disclosure can drive the display unit and the transparency control unit in different modes to improve the display effect of the transparent display device.
The present disclosure may be understood by reference to the following detailed description taken in conjunction with the accompanying drawings, it being noted that, in order to facilitate the understanding of the reader and for the sake of brevity of the drawings, various drawings in the present disclosure depict only a portion of the apparatus, and the specific components in the drawings are not necessarily drawn to scale. Furthermore, the number and size of the components in the figures are illustrative only and are not intended to limit the scope of the present disclosure.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
FIG. 1 is a block diagram of a display device according to an embodiment of the disclosure;
FIG. 2 is a flow chart of a driving method of a display device according to an embodiment of the disclosure;
FIG. 3 is a schematic side view of adjusting transmittance or displaying light intensity of light according to an embodiment of the disclosure;
FIG. 4 is a schematic diagram of a display device according to an embodiment of the disclosure in a hybrid display;
FIG. 5A is a schematic diagram of a display device in a display mode according to an embodiment of the disclosure;
FIG. 5B is a schematic diagram of a display device in a transparent mode according to an embodiment of the disclosure;
FIG. 6A is a schematic top view of a panel structure of a display device according to an embodiment of the disclosure;
FIG. 6B is a schematic cross-sectional view illustrating the configuration of the display unit and the transparency control unit according to the embodiment of FIG. 6A of the present disclosure;
FIG. 7A is a schematic top view of a panel structure of a display device according to another embodiment of the disclosure;
fig. 7B is a schematic cross-sectional view illustrating the configuration of the display unit and the transparency control unit according to the embodiment of fig. 7A of the present disclosure.
Description of the reference numerals
100. 300, 400, 500, 600;
101. 102, driving signals;
110. 630, 640 drive circuits;
120. 610, 710 display unit;
130. 620, 720 transparency control unit;
301. 301': ambient light;
302. 402, 404, 502, 504, display light;
303. 303', 303", 403, 405, 503, 505;
410. 511, 512, image picture content;
420. 521, 522, 523 background images;
450. 550, viewer;
600A, 600B, 700A;
601, conducting wires;
611. 621, 711, upper substrate;
612. 622, 712, lower substrate;
613. 624, 713, encapsulation layer;
614. 714 a planar layer;
615. 625, 715 passivation layer;
616. 624, 716 a gate insulating layer;
617. 623, 626, 717 spacers;
618. 718, a display unit;
618_1, 718_1, upper electrode;
618_2, 718_2;
618_3, 718_3;
618_4, 718_4;
619. 628, 719, 728 control transistors;
619_11, 628_11, 719_11, 728_11, source;
619_12, 628_12, 719_12, 728_12;
619_2, 628_2, 719_2, 728_2;
619_3, 628_3, 719_3, 728_3, semiconductor layer;
619_4, 628_4, 719_4, 728_4, light shielding layer;
627. 727, a transparent portion;
6271. 7271, 7272 electrode layers;
6272 shared electrode layer;
6273. 7273 dielectric layer;
650 an adhesive layer;
x, y and z directions;
AA is a display block;
S1, a display side;
S2, the back side;
S210-S260, namely, a step;
S310-S330, the situation.
Detailed Description
Certain terms are used throughout the description and following claims to refer to particular components. Those skilled in the art will appreciate that display device manufacturers may refer to a component by different names. It is not intended to distinguish between components that differ in function but not name. In the following description and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to.
Directional references herein, such as "upper", "lower", "front", "rear", "left", "right", etc., are merely with reference to the figures. Thus, the directional terminology is used for purposes of illustration and is not intended to be limiting of the disclosure. In the drawings, the various figures illustrate the general features of methods, structures and/or materials used in certain embodiments. However, these drawings should not be construed as defining or limiting the scope or nature of what is covered by these embodiments. For example, the relative dimensions, thicknesses, and locations of various layers, regions, and/or structures may be reduced or exaggerated for clarity.
When a corresponding element such as a film layer or region is referred to as being "on" another element, it can be directly on the other element or other elements can be present therebetween. On the other hand, when an element is referred to as being "directly on" another element, there are no elements therebetween. In addition, when a member is referred to as being "on" another member, the two members have an up-and-down relationship in a top view, and the member may be above or below the other member, and the up-and-down relationship depends on the orientation of the device.
In some embodiments of the disclosure, terms such as "connected," "interconnected," and the like, with respect to joining, connecting, and the like, may refer to two structures being in direct contact, or may refer to two structures not being in direct contact, with other structures being disposed between the two structures, unless otherwise specified. And the term coupled, connected, may also encompass the case where both structures are movable, or where both structures are fixed. Furthermore, the term "coupled" includes any direct or indirect electrical connection.
As used in this specification and the appended claims, the use of ordinal numbers such as "first," "second," etc., in the description and the claims, for modifying a component, by itself, does not by itself connote and represent any preceding ordinal number, nor does it represent the order in which a component is ordered from another component, or the order in which it is manufactured, but rather the ordinal numbers are used merely to distinguish one component having a certain name from another component having a same name. The same words may not be used in the claims and the description, whereby a first element in the description may be a second element in the claims. Whisker(s)
It is to be understood that the following exemplary embodiments may be substituted, rearranged, and mixed in order to accomplish other embodiments without departing from the spirit of the present disclosure.
Fig. 1 is a block diagram of a display device according to an embodiment of the disclosure. Referring to fig. 1, the display device 100 includes a driving circuit 110, a display unit 120, and a transparency control unit 130. The driving circuit 110 is coupled to the display unit 120 and the transparency control unit 130. In the present embodiment, the display unit 120 may include, for example, a Liquid Crystal (Liquid Crystal), an Organic LIGHT EMITTING Diode (OLED), an Inorganic Light Emitting Diode (LED), a sub-millimeter light emitting Diode (Mini-LED), a Micro-LED, a Quantum Dot (QD), a Quantum Dot Diode (QLED/QDLED), an electrophoresis (Electro-Phoretic), a Fluorescence (Fluorescence), a phosphorescence (Phosphor), other suitable materials, or a combination thereof, but the disclosure is not limited thereto. The transparency control unit 130 may include materials such as electrochromic (Electro Chromic) components or Liquid crystal (Liquid crystal) and the like, but the disclosure is not limited thereto.
In the present embodiment, the driving circuit 110 drives the display unit 120 and the transparency control unit 130 in different modes, wherein the "different modes" refer to, for example, providing different signals, and the signals may include, for example, voltage signals, current signals, gray scales, or update rates, but are not limited thereto. For example, the driving circuit 110 provides the driving signal 101 to the display unit 120 and the driving circuit 110 provides the driving signal 102 to the transparency control unit 130 to drive the display unit 120 and the transparency control unit 130. The drive signal 101 is different from the drive signal 102. In other words, the pixel unit type of the display unit 120 is different from the transparency control unit 130, and thus the display unit 120 and the transparency control unit 130 are driven with different driving signals. For example, if the display unit 120 is a pixel unit including an organic light emitting diode and the transparency control unit 130 is a pixel unit including a liquid crystal, the display unit 120 is driven in a current mode and the transparency control unit 130 is driven in a voltage mode. In other words, the driving signal 101 provided to the display unit 120 by the driving circuit 110 is a current signal, and the driving signal 102 provided to the transparency control unit 130 is a voltage signal, but the disclosure is not limited thereto.
In some embodiments, the driving signals 101 and 102 may be signals with different gray scales. For example, since the display unit 120 is used for displaying images, the driving signal 101 can provide the first gray scale number to the display unit 120. The first gray scale number is 256 gray scale signals, so the display unit 120 can have 256 gray scales to display more delicate image frames. Since the transparency control unit 130 is used for presenting transparent or non-transparent visual effects, the driving signal 102 can provide the second gray scale number to the transparency control unit 130. The second gray scale number is, for example, 2 gray scale signals, so the transparency control unit 130 can have 2 gray scales to represent transparent or non-transparent states. The transparent state may be, for example, a scene or an object that a viewer can see from one side of the display apparatus 100 through the transparency control unit 130 to the other side of the display apparatus 100. The non-transparent state may be, for example, a state in which a viewer cannot see a scene or an object on the other side of the display apparatus 100 through the transparency control unit 130 from one side of the display apparatus 100, or a state in which a viewer cannot see a scene or an object on the other side of the display apparatus 100 through the transparency control unit 130 from one side of the display apparatus 100. Specifically, the display device 100 may include a plurality of display units 120 and a plurality of transparency control units 130. The display device 100 may display an image picture by driving a portion of the display unit 120 and simultaneously provide a non-transparent display effect by a portion of the transparency control unit 130 at a position overlapping the display unit 120 displaying the image picture, and provide a transparent display effect by another portion of the transparency control unit 130 at a position of the other display unit 120 other than the image picture. Therefore, the display device 100 of the present embodiment can provide a transparent display effect with high contrast. In other embodiments, the position of the display unit 120 for displaying the image frame can also provide a transparent display effect through a part of the transparency control unit 130, so that the viewer can view the image frame and the object behind the display device at the same time.
However, the driving signals 101 and 102 of the present disclosure are not limited to the above gray scale numbers. In other embodiments, the driving signal 101 may include signals with more than 256 gray scales or less than 256 gray scales, and the driving signal 102 may include signals with more than 2 gray scales, but is not limited thereto. In this regard, in one embodiment, the display unit 120 may be driven with a first gray scale, and the transparency control unit 130 may be driven with a second gray scale, wherein the first gray scale is different from the second gray scale. In some embodiments, the first gray scale is greater than the second gray scale. In addition, in another embodiment, the display unit 120 and the transparency control unit 130 may also be driven at different update rates (REFRESH RATE), respectively. For example, the display unit 120 may be driven at a higher update rate, such as 240 hertz (Hz), to provide a good display effect. In addition, compared to the display unit 120, since the transparency control unit 130 is mainly used for displaying transparent or non-transparent visual effects, the transparency control unit 130 can be driven at a lower update rate, for example, 1 hz, so that the power saving effect can be achieved and good transparent or non-transparent visual effects can be effectively provided, but the disclosure is not limited thereto.
In some embodiments, the driving timings of the display unit 120 and the transparency control unit 130 may correspond to each other, for example, the turn-on time of the display unit 120 may be the same as the turn-on time of the transparency control unit 130, or the display unit 120 and the transparency control unit 130 may be turned on at substantially the same time point.
Fig. 2 is a flowchart of a driving method of a display device according to an embodiment of the disclosure. Referring to fig. 1 and 2, the display device 100 of fig. 1 may perform steps S210 to S260. It should be noted that the display device 100 of fig. 1 may further include an ambient light sensing unit for sensing the intensity of the ambient light in real time, wherein the ambient light sensing unit may be disposed outside or inside the display device 100, and the disclosure is not limited thereto. In addition, the display device 100 can correspondingly adjust the light intensity or the transmittance of the display light of the display panel along with the light intensity change of the ambient light, so that the display device 100 can maintain a good display effect. The term "light intensity" as used herein refers to a spectral integral of a light source (which may be, for example, display light or ambient light). In some embodiments, the light source may comprise visible light (e.g., having a wavelength between 380nm and 780 nm) or ultraviolet light (e.g., having a wavelength less than 365 nm), but is not limited thereto, meaning that when the light source is visible light, the light intensity is a spectral integral value in the range of 380nm to 780 nm. The transmittance of the present disclosure refers to the percentage of the light intensity of the transmitted light measured after the ambient light transmitted through the display device 100 divided by the light intensity measured when the ambient light did not transmit through the display device 100.
Based on the above conditions, the display device 100 may perform the following steps S210 to S260. In step S210, a preset condition may be set for the display device 100 by the user, wherein the preset condition may be, for example, a specific proportional relationship between the light intensity of the display light and the light intensity of the transmitted light of the display device 100, and will be described in detail in the following fig. 3 embodiment. In step S220, the ambient light sensing unit of the display device 100 can obtain an ambient signal, such as a light intensity signal of ambient light. In step S230, the driving circuit 110 determines whether the relationship between the light intensity of the transmitted light and the light intensity of the display light of the current display device 100 meets the preset condition. If yes, in step S240, the driving circuit 110 does not adjust the transmittance or the light intensity of the display light. If not, in step S250, the driving circuit 110 adjusts at least one of the driving signal 101 for driving the display unit 120 and the driving signal 102 for driving the transparency control unit 130. In step S260, the display device 100 may adjust at least one of the transmittance through the transparency control unit 130 and the light intensity of the display light through the display unit 120, so that the relationship between the light intensity of the transmitted light and the light intensity of the display light meets the predetermined preset condition.
The "light intensity of the display light" can be adjusted according to the design of the designer, for example, different driving signals can be designed on the driving chip or the driving circuit to correspond to different light intensities of the display light. For example, if the display device 100 needs the light intensity of the display light with 100 nits, the driving chip or the driving circuit can provide the corresponding driving signal to make the display device 100 have the light intensity of the display light with 100 nits. The "light intensity of transmitted light" can also be adjusted according to the design of the designer, for example, different driving signals can be designed on the driving chip or the driving circuit to correspond to different light intensities of transmitted light, wherein the driving signals can also correspond to corresponding transmittance.
Therefore, the display device 100 of the present embodiment can provide the automatic adjustment function of at least one of the display unit 120 and the transparency control unit 130 according to the light intensity of the ambient light and the relationship between the light intensity of the current display light and the light intensity of the transmitted light, so that the display device 100 can automatically maintain a good display effect under the variation of different ambient lights. In addition, in an embodiment, the display device 100 of fig. 1 may further include an input interface (not shown) and a control unit (not shown), so that the user can input a control command through the input interface to make the control unit adjust at least one of the light intensity (for example, the light intensity of the display light of the display unit 120) or the transmittance of the display light of the display device 100 according to the control command in a manual control manner. In other words, the contrast of the image displayed by the display device 100 can be manually set according to the preference or the requirement of the user.
FIG. 3 is a schematic side view of adjusting transmittance or displaying light intensity according to an embodiment of the disclosure. Referring to fig. 3, the automatic adjustment means of the embodiment of fig. 2 may be continued, and the situations S310 to S320 of fig. 3 are used to illustrate how the display device 100 of the present disclosure maintains the display effect of the display device 100 by adjusting the transmittance or the light intensity of the display light, wherein the default condition may be, for example, that the light intensity of the display light 302 is greater than or equal to twice the light intensity of the transmission light 303, but the disclosure is not limited thereto. The directions x, y and z are indicated in fig. 3. The direction z may be, for example, a direction of the display device 100 toward the viewer. The direction z may be perpendicular to the direction x and the direction y, and the direction x may be perpendicular to the direction y. Subsequent figures may describe the following embodiments of the structure in terms of direction x, direction y, and direction x. In contrast, in the case S310, the display device 300 emits, for example, 200 nits of display light 302. The back side S2 of the display device 300 may, for example, receive the ambient light 301 of 100 nit (nit), and the display device 300 may, for example, have a transparent display effect with a transmittance of 50%. Therefore, the display side S1 of the display device 300 can emit the transmitted light 303 of 50 nits, and the relationship between the transmitted light intensity of the display device 300 and the light intensity of the display light meets the above-mentioned preset condition (200. Gtoreq.2×50). In other embodiments, the viewer may view the display image from the display side S1 or the back side S2 of the display device 300, but the disclosure is not limited thereto.
Incidentally, in a measurement scenario, the display device 300 of the present embodiment displays a fixed screen. In this regard, in an environment with known light intensity of ambient light, the fixed display area of the display device 300 can be measured as the sum of the transmitted light intensity and the display light intensity. Then, the fixed display area of the display device 300 can be individually measured to measure the light intensity of the display light in an environment completely shielded from the ambient light. Therefore, after subtracting the above two measurement results, the light intensity of the transmitted light can be obtained, and the relationship between the light intensity of the transmitted light and the light intensity of the display light of the array display device 300 can be obtained by adjusting the light intensity of the ambient light according to the measurement method, so as to estimate whether the relationship is met. In addition, under the environment of the known light intensity of the ambient light, the display unit and the transparent control unit in the fixed display area of the display device 300 can also be measured independently, so as to measure the light intensity of the transmitted light and the light intensity of the display light at the same time, and also obtain the relationship between the light intensity of the transmitted light and the light intensity of the display light of the display device 300.
With continued reference to fig. 3, when the brightness of the environment changes, in the context S320, the display device 300 emits, for example, 200 nit of display light 302, and the back side S2 of the display device 300 may, for example, change to receive 1000 nit of ambient light 301'. In contrast, if the display device 300 maintains a transparent display effect with 50% transmittance, the display side S1 of the display device 300 emits 500 nits of transmitted light 303', so that the relationship between the transmitted light intensity of the display device 300 and the light intensity of the display light does not meet the above-mentioned preset condition (200 <2×500), and the display effect of the display device 300 is too high due to the brightness of the ambient light, which results in poor contrast of the image displayed by the display device 300. Therefore, in the context S330, the display device 300 may execute the process as described above in fig. 2 to automatically reduce the transmittance of the display device 300 to 10%. In this case, the display side S1 of the display device 300 with the transmittance automatically adjusted can emit the transmitted light 303″ of 100 nits. Accordingly, the relationship between the light intensity of the transmitted light and the light intensity of the display light of the display device 300 after the transmittance is automatically adjusted can meet the above-mentioned preset condition (200. Gtoreq.2×100).
In addition, in an embodiment, the display device 300 may also adjust the light intensity of the display light of the display device 300 in the context S330 so that the relationship between the light intensity of the transmitted light and the light intensity of the display light through the display device 300 after the automatic adjustment will meet the above-mentioned preset condition. Alternatively, the relationship between the light intensity of the transmitted light and the light intensity of the display light through the display device 300 after the automatic adjustment can meet the above-mentioned preset conditions by increasing the light intensity of the display light and reducing the light transmittance synchronously, but is not limited to the above-mentioned manner of adjusting the light transmittance or the light intensity of the display light. In other embodiments, if the brightness of the ambient light is too high, even if the display device 300 automatically adjusts the transmittance to the minimum transmittance and/or automatically adjusts the display light to the maximum light intensity, the relationship between the light intensity of the transmitted light and the light intensity of the display device 300 after the transmittance and/or the light intensity of the display light are automatically adjusted can not meet the above-mentioned predetermined conditions, but the display device 300 still automatically adjusts the transmittance to the minimum transmittance and/or automatically adjusts the display light to the maximum light intensity, so as to achieve a good transparent display effect.
In other words, under different ambient light intensity variations, for example, in the embodiment of fig. 1, the driving circuit 110 may drive the display unit 120 and/or the transparency control unit 130 in different driving modes, so as to implement the implementation means for adjusting the light intensity or the transmittance of the display light of the display panel of fig. 2 or fig. 3, and then the relationship between the light intensity of the transmitted light and the light intensity of the display light obtained by the certain display device according to the measurement method may meet the preset conditions described in fig. 2 or fig. 3.
Fig. 4 is a schematic diagram of a display device according to an embodiment of the disclosure in a hybrid display. Referring to fig. 4, the display device 400 may be the same as the related internal units of the display device 100 of fig. 1, and thus, description thereof is omitted. In this embodiment, the display device 400 can realize a transparent display effect of partial transparency and partial display. As shown in fig. 4, the display area AA of the portion of the display device 400 may be used to display the image content 410, and the portion other than the image content 410 may be in a transparent state (e.g., the transmittance of the display area AA other than the image content 410 is higher), so that the background image light of the background image 420 behind the display device 400 may penetrate the display device 400 in a higher proportion. In other words, the viewer 450 can clearly view the image screen content 410 and the background image 420 behind the display device 400 from the display device 400 of the present embodiment at the same time.
In the present embodiment, the display device 400 can adjust the transmittance of different display areas of the display device 400 and the light intensity of the display light according to different display requirements. For example, the display area AA of the portion of the display device 400 corresponding to the image frame content 410 may be in a display mode. The display mode refers to that the light intensity of the display light 402 of the display area AA of the portion of the display device 400 displaying the image content 410 is greater than the light intensity of the transmission light 403 (i.e. the transmission rate of the display area AA of the portion displaying the image content 410 is lower), so that the image content 410 can be clearly displayed. In an embodiment, the light intensity of the transmitted light 403 divided by the light intensity of the display light 402 of the display device 400 operating in the display mode may be, for example, less than 1 or less than 0.5. However, the display area AA of another portion of the display device 400 corresponding to the background image 420 behind the display device 400 may be in a transparent mode. The transparent mode means that the light intensity of the light 405 transmitted through the display area AA of the other portion of the display device 400 can be greater than the light intensity of the display light 404 (i.e. the light transmittance of the display area AA of the other portion except the display image content 410 is higher), so that the background image light of the background image 420 behind the display device 400 can be clearly displayed by penetrating the display device 400 in a higher proportion. In an embodiment, the light intensity of the transmitted light 405 divided by the light intensity of the display light 404 of the display device 400 operating in the transparent mode may be, for example, greater than 1 or greater than 2. In other words, the different display blocks of the display device 400 of the present embodiment can drive the display unit and the transparency control unit in different modes according to the specific display requirements, for example, different driving signals 101 are provided to drive the display unit and different driving signals 102 are provided to drive the transparency control unit, so that the display device 400 can have both the display mode and the transparent mode, so as to provide a good transparent display effect.
Fig. 5A is a schematic diagram of a display device in a transparent mode according to an embodiment of the disclosure. Fig. 5B is a schematic diagram of a display device in a display mode according to an embodiment of the disclosure. The display device 500 of fig. 5A and 5B may be the same as the related internal units of the display device 100 of fig. 1, and thus the description thereof is omitted. Referring first to fig. 5A, if the current display requirement of the display device 500 is that the overall images 521, 522, 523 desired to be presented behind the display device 500, the overall display area AA of the display device 500 may be in a transparent mode. The transparent mode means that the light intensity of the transmitted light 503 of the entire display area AA of the display device 500 can be much greater than the light intensity of the display light 502, so that the images 521, 522, 523 behind the display device 500 can all penetrate the display device 500 to be clearly seen by the viewer 550 in front of the display device 500. In contrast, referring to fig. 5B, if the current display requirement of the display device 500 is that the images 521, 522, 523 behind the display device 500 are blocked, i.e. the images 521, 522, 523 behind the display device 500 cannot be seen by the viewer, then all the image contents 511, 512 are displayed, i.e. the whole display area AA of the display device 500 can be in the display mode. In this regard, the light intensity of the transmitted light 505 of the entire display area AA of the display device 500 may be much smaller than the light intensity of the display light 504, so that the viewer 550 in front of the display device 500 can clearly see all the image contents 511 and 512 displayed by the display device 500.
Fig. 6A is a schematic top view of a panel structure of a display device according to an embodiment of the disclosure. Fig. 6B is a schematic cross-sectional view of the display unit and the transparency control unit according to the embodiment of fig. 6A of the present disclosure. Referring first to fig. 6A, a display device 600 may be, for example, an on-cell panel architecture. The display device 600 includes two display panels 600A, 600B and driving circuits 630, 640, wherein the display panel 600A is stacked above the display panel 600B. The display panel 600A at least partially overlaps the display panel 600B, for example, as viewed from the direction z. In the present embodiment, the display panel 600A includes a plurality of display units 610 arranged in an array, and the display panel 600B includes a plurality of transparency control units 620 arranged in an array. The display panels 600A and 600B are driven by the driving circuits 630 and 640 respectively, and the driving circuit 630 and the driving circuit 640 can be coupled through the wires 601, so that the driving circuits 630 and 640 can be controlled and can synchronously or respectively provide the driving signal 101 and the driving signal 102, so as to achieve the display effect of the above embodiments. Specifically, the display device 600 may determine the transmittance of the display device 600, that is, determine the transparent display degree of the image frame by providing the driving signal 102 to the driving circuit 640 to control the transparency control unit 620. In some embodiments, the driving circuit 630 and the driving circuit 640 can be regarded as the same driving circuit, but not limited to this.
Referring next to fig. 6B, a cross-sectional structure of the display panels 600A, 600B is shown in fig. 6B. Fig. 6B is a schematic cross-sectional view of a display unit corresponding to a transparency control unit. One display unit 610 of the display panel 600A may be correspondingly disposed on one transparency control unit 620 of the display panel 600B. In other words, one display unit 610 may at least partially overlap one transparency control unit 620 in the direction z. In the present embodiment, the upper substrate 611 of the display panel 600A is directed toward the display side S1 close to the display device 600, and the lower substrate 622 of the display panel 600B is directed toward the back display side S1 away from the display device 600. In the present embodiment, for example, a packaging layer (Encapsulating layer) 613, a planarization layer (Planarization layer) 614, a passivation layer (Passivation layer) 615, a gate insulating layer (Gate insulating layer) 616, and a spacer layer (INTERVAL LAYER) 617 may be disposed between the upper substrate 611 and the lower substrate 612 of the display panel 600A. It is noted that the encapsulation layer 613, the planarization layer 614, the passivation layer 615, the gate insulating layer 616, and the spacer layer 617 in this embodiment may be, for example, insulating layers, and the insulating layers may also be a single layer or other multi-layer structure in some embodiments, and may, for example, include organic materials, inorganic materials, or a combination of the foregoing, and are not limited to those shown in fig. 6B.
In this embodiment, the display unit 610 includes a display portion 618 and a control transistor 619. A display portion 618 of the display unit 610 is arranged between the encapsulation layer (Encapsulating layer) 613 and the planarization layer (Planarization layer) 614, and a control transistor 619 of the display unit 610 is arranged between the passivation layer 615, the gate insulating layer 616, and the spacer layer 617. The display portion 618 may be, for example, an organic light emitting diode, and includes a portion of an upper electrode 618_1, a light emitting layer 618_2, and a lower electrode 618_3. The control Transistor 619 may be, for example, a Thin Film Transistor (TFT), and includes a source 619_11, a drain 619_12, a gate 619_2, a semiconductor layer 619_3, and a light shielding layer 619_4. The light shielding layer 619_4 may be, for example, a metal material or other light shielding materials, and in some embodiments, the control transistor 619 may not be provided with the light shielding layer 619_4. The display portion 618 is electrically connected to the control transistor 619 through a Via hole 618_4. It should be noted that the control transistor 619 of the present embodiment is a Top gate structure (Top gate), but the disclosure is not limited thereto. In one embodiment, the control transistor 619 may also be a Bottom gate structure (Bottom gate). In this embodiment, the control transistor 619 is used to drive the display portion 618 according to a driving signal provided by the driving circuit 630. In this regard, the control transistor 619 can control the display portion 618 to generate display light or turn off the display portion 618.
In the present embodiment, an adhesive layer 650 is provided between the lower substrate 612 of the display panel 600A and the upper substrate 621 of the display panel 600B. The adhesive layer 650 may include, for example, a solid transparent Optical adhesive (Optical CLEAR ADHESIVE, OCA) or a liquid transparent Optical adhesive (Optical CLEAR RESIN, OCR), and the disclosure is not limited thereto. A spacer layer 623, a spacer layer 626, a gate insulating layer 624, and a passivation layer 625 are disposed between the upper substrate 621 and the lower substrate 622 of the display panel 600B. It is noted that the spacer layer 623, the spacer layer 626, the gate insulating layer 624, and the passivation layer 625 of the present embodiment may be, for example, insulating layers, and the insulating layers may be single-layer or other multi-layer structures in some embodiments, and include organic materials, inorganic materials, or a combination of the foregoing, and are not limited to those shown in fig. 6B.
In the present embodiment, any one of the transparency control units 620 in the display panel 600B may include a transparent portion 627 and a control transistor 628. A control transistor 628 of the transparency control unit 620 is arranged between the spacer layer 623, the gate insulating layer 624 and the passivation layer 625, and a transparent portion 627 of the transparency control unit 620 is arranged between the passivation layer 625 and the spacer layer 626. Transparent portion 627 may include electrode layer 6271 and a portion of shared electrode layer 6272 and a portion of dielectric layer 6273. The dielectric layer 6273 may include, for example, a liquid crystal material, but is not limited thereto. In addition, the electrode layers of different transparent units can be separated from each other, but can be formed by the same process. The control transistor 628 may be, for example, a thin film transistor, and includes a source electrode 628_11, a drain electrode 628_12, a gate electrode 628_2, a semiconductor layer 628_3, and a light shielding layer 628_4. The drain electrode 628_1 of the control transistor 628 is electrically connected to the electrode layer 6271 of the transparent portion 627. In this embodiment, the control transistor 628 is configured to drive the dielectric layer 6273 through the electrode layer 6271 and the shared electrode layer 6272 according to a driving signal provided by the driving circuit 640. That is, the control transistor 628 may control the rotation angle of the liquid crystal in the dielectric layer 6273 of the portion of the transparent portion 627 to assume a transparent or non-transparent state. In addition, in the present embodiment, one display unit 610 corresponds to one transparency control unit 620, but the disclosure is not limited thereto. In other embodiments, one display unit may correspond to a plurality of transparency control units, or a plurality of display units may correspond to a plurality of transparency control units.
Fig. 7A is a schematic top view of a panel structure of a display device according to another embodiment of the disclosure. Fig. 7B is a schematic cross-sectional view of the display unit and the transparency control unit according to the embodiment of fig. 7A of the present disclosure. Referring first to fig. 7A, a display device 700 may be, for example, a panel architecture of an in-cell. The display device 700 includes a hybrid display panel 700A and a driving circuit 730. For example, the display device 700 is different from the display device 600 described above in that the display device 700 includes a display panel 700A, and the display panel 700A includes a plurality of display units 710 and a plurality of transparency control units 720 arranged in an array. In the present embodiment, the driving circuit 730 drives the display unit 710 and the transparency control unit 720 in different modes, for example, the driving circuit 730 provides two different driving signals to drive the display unit 710 and the transparency control unit 720 respectively, so as to achieve the display effect of each embodiment. Specifically, the display device 700 may determine the transmittance of the display device 700, that is, determine the transparent display degree of the image frame by providing the driving signal 102 to the driving circuit 730 to control the transparency control unit 720.
It should be noted that, in fig. 7A, the plurality of display units 710 and the plurality of transparency control units 720 may be, for example, disposed between the plurality of transparency control units 720 of two corresponding columns (the plurality of transparency control units 720 respectively aligned along the y-direction) in the plurality of display units 710 of each column (the plurality of display units 710 aligned along the y-direction), and the number of the plurality of display units 710 of each column is the same as the number of the plurality of transparency control units 720 of each column, but the disclosure is not limited thereto. In an embodiment, the plurality of display units 710 and the plurality of transparency control units 720 may also be, for example, disposed between the plurality of transparency control units 720 in two corresponding columns with the plurality of display units 710 in each column, and the number of the plurality of display units 710 in each column is different from the number of the plurality of transparency control units 720 in each column. For example, one display unit 710 of a certain column is disposed between respective ones of the plurality of transparency control units 720 of two adjacent columns, or a plurality of display units 710 of a certain column is disposed between respective ones of the transparency control units 720 of two adjacent columns. In another embodiment, the display units 710 and the transparency control units 720 may be arranged in a staggered manner. Or every adjacent four cells form a pixel group, three of which may be the display cells 710 and the remaining one of which may be arranged in the manner of the transparency control cells 720. For example, three units of a first column and a second column of a first row and a first column of a second row are the display unit 710, and one unit of a second column of the second row is the transparency control unit 720. However, for the display units 710 and the arrangement order, arrangement form and number proportion of the units of the display units 710, the present disclosure may be designed correspondingly according to different usage requirements.
Referring next to fig. 7B, a cross-sectional structure of the display panel 700A is shown in fig. 7B. Fig. 7B is a schematic cross-sectional view of a display unit corresponding to a transparency control unit. One display unit 710 and one transparency control unit 720 of the display panel 700A are disposed on the lower substrate 712 and may be aligned in the x-direction or the y-direction. In the present embodiment, the upper substrate 711 of the display panel 700A is close to the display side S1 of the display device 700, and the lower substrate 712 of the display panel 700A is far from the display side S1 of the display device 700. In the present embodiment, a package layer 713, a planarization layer 714, a passivation layer 715, a gate insulating layer 716, and a spacer layer 717 are disposed between the upper substrate 711 and the lower substrate 712 of the display panel 700A. It should be noted that the encapsulation layer 713, the planarization layer 714, the passivation layer 715, the gate insulating layer 716, and the spacer layer 717 of the present embodiment may be, for example, insulating layers, and the insulating layers may also be a single layer or other multi-layer structure in some embodiments, and may, for example, include organic materials, inorganic materials, or a combination thereof, and are not limited to those shown in fig. 7B.
In this embodiment, the display unit 710 includes a display portion 718 and a control transistor 719. A display portion 718 of the display unit 710 is arranged between the encapsulation layer 713 and the planarization layer 714, and a control transistor 719 of the display unit 710 is arranged between the passivation layer 715, the gate insulating layer 716, and the spacer layer 717. The display portion 718 may be, for example, an organic light emitting diode, and includes a portion of an upper electrode 718_1, a light emitting layer 718_2, and a lower electrode 718_3. The control transistor 719 may be, for example, a thin film transistor, and includes a source 719_11, a drain 719_12, a gate 719_2, a semiconductor layer 719_3, and a light-shielding layer 719_4. The light shielding layer 719_4 may be, for example, a metal material or other light shielding material, and in some embodiments, the control transistor 719 may not be provided with the light shielding layer 719_4. The display portion 718 is electrically connected to the control transistor 719 through a through hole 718_4. It is noted that the control transistor 719 of the present embodiment is an upper gate structure, but the disclosure is not limited thereto. In one embodiment, the control transistor 619 may also be a bottom gate structure. In this embodiment, the control transistor 719 is used to drive the display portion 718 according to a driving signal supplied from the driving circuit 730. In this regard, the control transistor 719 may control the display portion 718 to generate display light or turn off the display portion 718.
In this embodiment, a control transistor 728 of the transparency control unit 720 is disposed between the passivation layer 715, the gate insulating layer 716, and the spacer layer 717, and a transparent portion 727 of the transparency control unit 720 is disposed between the encapsulation layer 713, the planarization layer 714, the passivation layer 715, the gate insulating layer 716, and the spacer layer 717. The transparent portion 727 includes an electrode layer 7271, an electrode layer 7272, and a dielectric layer 7273. The dielectric layer 7273 may include, for example, but not limited to, a liquid crystal material. The control transistor 728 can be, for example, a thin film transistor, and includes a source 728_11, a drain 728_12, a gate 728_2, a semiconductor 728_3, and a light shielding layer 728_4. In this embodiment, the control transistor 728 is used to drive the liquid crystal in the dielectric layer 7273 through the electrode layer 7271 and the electrode layer 7272 according to another driving signal provided by the driving circuit 730. That is, the control transistor 728 can control the rotation angle of the liquid crystal in the dielectric layer 7273 of the transparent portion 727 to be in a transparent or non-transparent state. It should be noted that, in the present embodiment, the drain 728_12 may be electrically connected to the electrode layer 7272, although not shown in fig. 7B, the drain 728_12 may be connected to the electrode layer 7272 through a through hole in a cross-sectional view of other areas, but the connection manner is not limited thereto. In addition, in the present embodiment, a display unit 710 corresponds to a transparency control unit 720, but the disclosure is not limited thereto. In other embodiments, one display unit may correspond to a plurality of transparency control units, or a plurality of display units may correspond to a plurality of transparency control units.
In summary, the display device of the present disclosure can effectively display a transparent display effect with high contrast ratio by providing different driving modes or driving signals to the display unit and the transparency control unit. Or the display device can also provide a function of automatically or manually adjusting the light intensity or the transmittance of the display light of the display device according to the current brightness of the ambient light, so that the display device can show good transparent display effect in various situations of different brightness of the ambient light. Or the display device can realize the mode that part of the display blocks are in a display mode and the other part of the display blocks are in a transparent mode so as to provide a multi-element transparent display effect.
Finally, it should be noted that the foregoing embodiments are merely illustrative of the technical solutions of the present disclosure, and not limiting thereof, and although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or replacements do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure.
Claims (6)
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| US17/184,629 US11335232B2 (en) | 2020-03-03 | 2021-02-25 | Display device |
| US17/726,490 US20220246080A1 (en) | 2020-03-03 | 2022-04-21 | Electronic device |
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| TWI808968B (en) | 2017-04-26 | 2023-07-21 | 美商唯景公司 | Window assembly, method and apparatus for controlling window assembly, and related non-transitory computer readable program instructions |
| US11454854B2 (en) | 2017-04-26 | 2022-09-27 | View, Inc. | Displays for tintable windows |
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| US8237643B2 (en) * | 2008-11-12 | 2012-08-07 | Himax Technologies Limited | Transreflective display apparatus and driving method thereof |
| TWI450238B (en) * | 2010-09-21 | 2014-08-21 | Wistron Corp | Compound display device and display control method thereof |
| TWI466094B (en) * | 2012-05-28 | 2014-12-21 | Acer Inc | Transparent display device and transparency adjustment method thereof |
| TWI576771B (en) * | 2012-05-28 | 2017-04-01 | 宏碁股份有限公司 | Transparent display device and transparency adjustment method thereof |
| US9240162B2 (en) * | 2012-12-31 | 2016-01-19 | Lg Display Co., Ltd. | Transparent display apparatus and method for controlling the same |
| KR20150081599A (en) * | 2014-01-06 | 2015-07-15 | 삼성전자주식회사 | Display apparatus and method for controlling the same |
| US10180741B2 (en) * | 2015-05-27 | 2019-01-15 | Samsung Electronics Co., Ltd. | Electronic apparatus including emissive display and transparent display and method of controlling same |
| KR102670056B1 (en) | 2016-11-18 | 2024-05-30 | 삼성디스플레이 주식회사 | Display apparatus and method of manufacturing the same |
| WO2019085989A1 (en) * | 2017-11-03 | 2019-05-09 | Boe Technology Group Co., Ltd. | Display panel, driving method thereof, and display apparatus |
| KR102456352B1 (en) | 2017-12-18 | 2022-10-19 | 엘지디스플레이 주식회사 | Organic light emitting display device |
| JP7338146B2 (en) * | 2018-11-27 | 2023-09-05 | ソニーグループ株式会社 | Display control device, display control method and display control program |
| US20220050314A1 (en) * | 2018-12-13 | 2022-02-17 | Hewlett-Packard Development Company, L.P. | Selective privacy displays |
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